发明授权
US08134989B2 Session control in SIP-based media services 有权
基于SIP的媒体业务中的会话控制

Session control in SIP-based media services
摘要:
A method of keeping a SIP application server advised of the status of a SIP client, where the SIP application server lies within both the signaling plane and the media plane for SIP clients and is responsible for accepting SIP clients into and removing them from a SIP session, the method comprising sending keep-alive messages from the SIP client to the SIP application server across the media plane.
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